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Please help I don’t understand math

Please help I don’t understand math-example-1

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4 votes

Answer:

x = 12

Explanation:

The sum of the two smaller angles is 140

80+5x = 140

Subtract 80 from each side

80+5x-80 =140-80

5x = 60

Divide each side by 5

5x/5 = 60/5

x = 12

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